From left to right:

Ensso PIUMA in brass - a lightweight 94 g (3.32 oz) with a Bock nib

https://drop.com/buy/ensso-piuma-brass-fountain-pen
https://www.ensso.com/collections/frontpage/products/piuma-minimal-fountain-pen (Titanium only)

TWSBI VAC700 clear - the original (not the R) with an electrical tape repair

https://www.twsbi.com/collections/fountain-pens/products/twsbi-vac700-fountain-pen

Sensa Meridian in Crystal Silver

https://sensapensofficial.com/ (No Meridian pens)
ASIN: B0006BDGWW

Parker 75 in stainless steel - inscribed in 1991

https://parkerpens.net/parker75.html

#FountainPen #Ensso #PIUMA #TWSBI #VAC700 #Sensa #Parker75